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Posted 17 Dec 2001

CRC32: Generating a checksum for a file

, 17 Dec 2001
How to generate a CRC32 based on a file
#ifndef _CRC32STATIC_H_
#define _CRC32STATIC_H_

#include "Common.h"

class CCrc32Static
	virtual ~CCrc32Static();

	static DWORD StringCrc32(LPCTSTR szString, DWORD &dwCrc32);
	static DWORD FileCrc32Streams(LPCTSTR szFilename, DWORD &dwCrc32);
	static DWORD FileCrc32Win32(LPCTSTR szFilename, DWORD &dwCrc32);
	static DWORD FileCrc32Filemap(LPCTSTR szFilename, DWORD &dwCrc32);
	static DWORD FileCrc32Assembly(LPCTSTR szFilename, DWORD &dwCrc32);

	static bool GetFileSizeQW(const HANDLE hFile, QWORD &qwSize);
	static inline void CalcCrc32(const BYTE byte, DWORD &dwCrc32);

	static DWORD s_arrdwCrc32Table[256];


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About the Author

Brian Friesen
Web Developer
United States United States
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